Viewing device



FIG. 1 is a front view of the viewing device according to our design;

FIG. 2 is a rear view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a right side view thereof; and,

FIG. 6 is a left side view thereof.

The broken lines represent portions of the viewing device that form no part of the claimed design. 

CLAIM The ornamental design of a viewing device, as shown and described. 